A heat wave is roasting western Europe, where temperatures are falling in quick succession, Axios' Ursula Perano notes.

• Paris area: 109 degrees Fahrenheit (old record 105)
• Germany: 109 (old record 105 set yesterday)
• Netherlands: 105 degrees (old record set yesterday)
• Belgium: 105
• London: 98

Why it matters: The Europeans don't use AC like Americans, and when heat waves hit, they kill.

• Most notably, a 2003 heat wave killed 15,000 people in France.
• "Until now, fewer than five percent of all European households have air-conditioning, compared with 90 percent in the United States," the WashPost notes.
• "But Europe’s air-conditioner stock is estimated to roughly double within the next two decades ... as record heat becomes more frequent."

The big picture: “There is likely the DNA of climate change in the record-breaking heat that Europe and other parts of the world are experiencing,” meteorology professor Marshall Shepherd told the AP.

• “The science behind heat wave attribution is very robust — the first extreme weather event to be definitively linked to global warming was the 2003 European heat wave,” said NASA climate scientist Kate Marvel.
• “We know that as the climate warms, heat waves become more likely and more severe.”

What's next: Europe is expected to cool down starting tomorrow.

Puerto Ricans march together as they celebrate the ouster of Gov. Ricardo Rosselló.

• After two weeks of protests, Gov. Rosselló stepped down after a group chat was exposed that included misogynistic and homophobic comments.

1. In the 24 hours since Robert Mueller warned of future election interference, Senate Republicans have blocked a collection of election security bills and a cybersecurity measure. Go deeper.
2. Tulsi Gabbard is suing Google for allegedly infringing on her free speech rights after her campaign ads were temporarily suspended following the first round of Democratic primary debates. Go deeper.
3. The European Central Bank left its key interest rate at -0.4%, but sent strong signals that its record low interest rate could be heading lower as soon as September. Go deeper.
4. Apple agreed to buy the majority of the smartphone-modem chip business of Intel for $1 billion.

The Minnesota Twins are on pace to finish the MLB season with a collective 311 home runs, which would obliterate the record of 267 set by the New York Yankees last year, writes the N.Y. Times' James Wagner.

• The league is in the midst of a controversy regarding "juiced" baseballs — with allegations flying that their composition was altered to improve offense — but the Twins' surge is something else.
• They've "become baseball’s dominant slugging team with more than just brute force. Among the other reasons: aggressiveness at the plate, modern hitting philosophies, power hitters added in the off-season and young players blossoming."

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